@misc{indiciae011bd2764615,
  title = {Hydrology of the Mississippi River Valley alluvial aquifer, South-Central United States},
  author = {D. J. Ackerman},
  year = {1990},
  doi = {10.3133/ofr90358},
  url = {https://pubs.usgs.gov/publication/ofr90358},
  note = {Source identifier: ofr90358}
}